WM8351GEB/V Wolfson Microelectronics, WM8351GEB/V Datasheet - Page 67

• Manufacturer Part Number: WM8351GEB/V
• Description: Audio CODECs Audio CODEC plus pwr management
• Manufacturer: Wolfson Microelectronics

Specifications of WM8351GEB/V

• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Conversion Rate: 48 KSPS
• Interface Type: Serial (2-Wire, 3-Wire, 4-Wire)
• Resolution: 12 bit
• Operating Supply Voltage: 3.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: BGA
• Minimum Operating Temperature: - 25 C
• Number Of Channels: 2 ADC/2 DAC
• Supply Current: 260 uA
• Thd Plus Noise: - 83 dB
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 8
• No. Of Output Channels: 6
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 95dB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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13.4.5
The WM8351 provides a programmable, low-noise bias voltage for condenser electret microphones
on the MICBIAS pin.
R8 (08h)
Power Mgmt 1
R74 (4Ah)
Mic Bias
Control
Note: MICB_ENA can be accessed through R8 or through R74. Reading from or writing to either
register location has the same effect.
Table 23 Controlling the Microphone Bias Voltage
ADDRESS
MICROPHONE BIASING
BIT
15
14
4
MICB_ENA
MICB_ENA
MICB_SEL
LABEL
DEFAULT
0
0
Microphone bias enable
0 = OFF (high impedance output)
1 = ON
This bit can be accessed through R8 or
through R74. Reading from or writing to
either register location has the same effect.
Microphone bias voltage control:
0 = 0.9 * AVDD
1 = 0.75 * AVDD
DESCRIPTION
PD, March 2010, Rev 4.2
WM8351
67